CN102562259A - Air inlet temperature control system of engine - Google Patents
Air inlet temperature control system of engine Download PDFInfo
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- CN102562259A CN102562259A CN2012100324586A CN201210032458A CN102562259A CN 102562259 A CN102562259 A CN 102562259A CN 2012100324586 A CN2012100324586 A CN 2012100324586A CN 201210032458 A CN201210032458 A CN 201210032458A CN 102562259 A CN102562259 A CN 102562259A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The invention discloses an air inlet temperature control system of an engine, which comprises an intercooler, a water tank, a main heat exchanger, a water pump and an auxiliary heat exchanger. The main heat exchanger is provided with a first channel and a second channel, the second channel of the main heat exchanger and a water channel of the intercooler form a second loop, a temperature sensor is mounted in the second loop, an output end of the temperature sensor is electrically connected with a controller, the water pump is electrically connected with an output end of the controller, and the water pump, the first channel of the main heat exchanger and the water tank form a first loop. A first channel of the auxiliary heat exchanger and a frozen water source form a third loop via a cold water pipe, and a second channel of the auxiliary heat exchanger is serially connected onto the first loop of a water outlet end of the water tank. Due to the structure, the air inlet temperature control system of the engine is reasonable in structure, low in heat exchange temperature fluctuation, high in temperature control precision, stable in work and beneficial for increasing performances of the engine.
Description
Technical field
The present invention relates to a kind of engine charge temperature control system.
Background technique
Along with the continuous development of engine booster technology, the application of intercooler more and more widely.For the performance requirement that improves motor and be the motor research and development condition that facilitates, need accurately control the Engine Inlet Temperature of one of factor of influencing engine performance and exhaust index (also i.e. the intake temperature after cold in intercooler).At present, available engine air inlet temperature control system generally comprises intercooler and water tank, and the water channel of water tank and intercooler constitutes heat-exchanging loop, and the air flue of intercooler is communicated with engine air inlet tube.Conventional engines air inlet temperature control system is that the water channel through water in the water tank and intercooler carries out the loop heat exchange, realizes intercooler gas circuit temperature controlling.Because water tank volume is limited, along with the continuous running of motor, the temperature of water is increasingly high in the water tank, will be worse and worse with the loop heat exchange effect of intercooler, and cause Engine Inlet Temperature increasingly high.And, because conventional engines air inlet temperature control system, employing be the single loop heat exchange structure, heat exchange is direct, causes the intercooler temperature fluctuation bigger easily like this, is difficult to satisfy intercooler 20-25 degree centigrade optimum working temperature requirement.Therefore, Traditional engine air inlet temperature control system can not make Engine Inlet Temperature constant relatively, also is difficult to satisfy the requirement of motor research and development test.
Summary of the invention
The technical problem that the present invention will solve is to provide a kind of rational in infrastructure to above-mentioned deficiency, and the heat exchange temperature fluctuation is little, and temperature-controlled precision is high, and a kind of engine charge temperature control system of working stability.
For solving the problems of the technologies described above; This engine charge temperature control system comprises intercooler and water tank, and its structural feature is: also comprise the main heat exchanger that is provided with first passage and second channel, the second channel of main heat exchanger and the water channel of intercooler constitute second loop; In second loop temperature transducer is installed; The output terminal of temperature transducer is electrically connected with controller, also comprises the water pump that is electrically connected with controller output end, and the first passage of water pump, main heat exchanger and water tank constitute first loop.
The engine charge temperature control system of this structure realizes that through the two heat exchange structures in double loop the heat exchange temperature fluctuation is little, and temperature-controlled precision is high, and working stability.
The two heat exchange structures in double loop mainly comprise second loop that the water channel by the second channel of main heat exchanger and intercooler constitutes, and by first passage, water pump and the water tank of main heat exchanger be connected in sequence first loop.Above-mentioned first loop and second loop are separate in operation, are independent of each other, but structurally, are linked together by main heat exchanger, and carry out the exchange heat in two loops through main heat exchanger.In first loop water pump is installed, in second loop temperature transducer is installed, water pump and temperature transducer are electrically connected with the output terminal and the input end of controller respectively.Like this; Under the support of main heat exchanger; Low temperature water in the water tank is just carried out exchange heat through the high-temperature water in first loop and second loop; So that the reduction of the water temperature in the intercooler water channel, and then reach the purpose that reduces the intercooler air flue air temperature that is connected with engine air inlet tube, so just realized purpose to Engine Inlet Temperature control.During work; Controller is according to being arranged on the temperature signal that temperature transducer sends in second loop; Working staties such as the open frequency of control of pump or rotating speed regulating the convection current situation of first loop and the second loop exchange heat, and then realize the control to second loop water temperature height.For example, when second loop water temperature was higher than 25 degrees centigrade, controller started pump working or promotes pump rotary speed, to accelerate the first circuit cycle speed, has so just accelerated the heat transfer rate of main heat exchanger, descended so that second loop water temperature is descended or quicken; Otherwise; When second loop water temperature was lower than 20 degrees centigrade, controller reduced the pump rotary speed or the work that directly switches off the pump, to reduce by the first circuit cycle speed; So just reduce the heat transfer rate of main heat exchanger, helped first loop water temperature under intercooler air flue high temperature, to heat up.Above-mentioned two control procedure complementary operations, up to first loop water temperature, just the intercooler water temperature is adjusted to 20-25 degree centigrade optimum working temperature.
As improvement, also comprise auxiliary heat exchanger, the first passage of auxiliary heat exchanger constitutes tertiary circuit through cold water pipe and freezing water source, and the second channel of auxiliary heat exchanger is serially connected on first loop of water tank waterexit end.
The main effect of auxiliary heat exchanger; Be that the tertiary circuit that will be connected with freezing water source carries out heat exchange with second loop that is connected with water tank; Can play the effect that reduces by first loop water temperature like this; Also just play the effect that reduces by second loop water temperature and Engine Inlet Temperature, helped to improve the cooling function of this engine charge temperature control system.
As further improvement, also comprise the automatically controlled three-way valve that is electrically connected with controller output end, first port of automatically controlled three-way valve and second port are serially connected in first loop of water pump feed-water end, and the 3rd port of automatically controlled three-way valve is communicated with water tank through by-pass pipe.
Through automatically controlled three-way valve; Controller can be adjusted the first loop low temperature water after the tertiary circuit cooling; Ratio with mixing through the laggard middle warm water of going into water tank of main heat exchanger heat exchange can obtain the adjustable heat exchange water of temperature, and the first loop water temperature controllability with the main heat exchanger heat exchange is strengthened greatly; Improve the heat exchange precision of main heat exchanger greatly, also just realized the accurate control of second loop and engine charge.
As improvement, the level meter that is electrically connected with controller is installed in the water tank, water tank is provided with the water pipe that is connected with the water source, and the water supply valve by controller control is installed on the water pipe.
Through the liquid level signal that level meter sends, controller can be controlled water supply valve and make corresponding actions, so that keep the proper functioning water level of water tank.For example, cistern water level is crossed when hanging down, and controller will be opened water supply valve, to pass through water pipe to the water tank water-filling; When cistern water level reached normal water level, controller was just closed water supply valve, to keep the normal working water level of water tank.
As further improvement, the cold valves that is electrically connected with controller is installed on the cold water pipe, the first passage waterexit end of auxiliary heat exchanger is equipped with the thermometer that is electrically connected with controller.
Through the testing signal of thermometer, controller can obtain the water temperature numerical value after the auxiliary heat exchanger heat exchange, and through the testing signal of temperature transducer, controller can obtain the water temperature numerical value after the main heat exchanger heat exchange.Through the comparison to above-mentioned two water temperature signals, controller can judge whether to need auxiliary heat exchanger to work on or continuous firing.Like this, controller just can be controlled the working state of auxiliary heat exchanger through the opening and closing of control cold valves, has both helped stable control Engine Inlet Temperature, has reduced the consumption at freezing water source again, has also just reduced operating cost.
In sum, adopt the engine charge temperature control system of this structure, rational in infrastructure, the heat exchange temperature fluctuation is little, and temperature-controlled precision is high, and working stability, helps to improve engine performance.
Description of drawings
In conjunction with accompanying drawing the present invention is explained further details:
Fig. 1 is a structural representation of the present invention.
Among the figure: 1 is intercooler, and 2 is water tank, and 3 is cold valves, and 4 is thermometer; 5 is main heat exchanger, and 6 is water pump, and 7 is controller, and 8 is temperature transducer; 9 is automatically controlled three-way valve, and 10 is by-pass pipe, and 11 is auxiliary heat exchanger, and 12 is freezing water source; 13 is cold water pipe, and 14 is level meter, and 15 is water pipe, and 16 is water supply valve.
Embodiment
As shown in Figure 1, be the structural representation of this engine charge temperature control system, this engine charge temperature control system comprises intercooler 1 and water tank 2, and the height of water tank 2 will be higher than intercooler 1 and be provided with, and the air flue of intercooler 1 is connected with engine air inlet tube.Also comprise main heat exchanger 5; Be provided with first passage and second channel adjacent and that isolate setting in the main heat exchanger 5; The water channel of the second channel of main heat exchanger 5 and intercooler 1 constitutes second loop, and temperature transducer 8 is installed in second loop, and the output terminal of temperature transducer 8 is electrically connected with controller 7.Also comprise the water pump 6 that is electrically connected with controller 7 output terminals, the first passage and the water tank 2 of water pump 6, main heat exchanger 5 connect and compose first loop successively.The level meter 14 that is electrically connected with controller 7 is installed in the water tank 2, and water tank 2 is provided with the water pipe 15 that is connected with the water source, and the water supply valve 16 by controller 7 controls is installed on the water pipe 15.Through the liquid level signal that level meter 14 sends, controller 7 can be controlled water supply valve 16 and make corresponding actions, so that keep the proper functioning water level of water tank 2.For example, water tank 2 water levels are crossed when hanging down, and controller 7 will be opened water supply valve 16, to pass through water pipe 15 to water tank 2 water-fillings; When water tank 2 water levels reached normal water level, controller 7 was just closed water supply valve 16, to keep water tank 2 normal working water levels.
Above-mentioned first loop and second loop are separate in operation, are independent of each other, but structurally, are linked together by main heat exchanger 5, and carry out the exchange heat in two loops through main heat exchanger 5.The temperature transducer of installing in water pump 6, the second loops of installing in first loop 8, output terminal and the input end with controller 7 is electrically connected respectively.Like this; Under the heat exchange effect of main heat exchanger 5; Low temperature water in the water tank 2 is just carried out exchange heat through the higher warm water in first loop and second loop; So that the reduction of the water temperature in intercooler 1 water channel, and then reach the purpose that reduces the intercooler 1 air flue air temperature that is connected with engine air inlet tube, so just realized purpose to Engine Inlet Temperature control.
During work; Controller 7 is according to being arranged on the temperature signal that temperature transducer 8 sends in second loop; Working staties such as the open frequency of control of pump 6 or rotating speed regulating the convection current situation of first loop and the second loop exchange heat, and then realize the control to second loop water temperature height.For example, when second loop water temperature was higher than 25 degrees centigrade, controller 7 started water pump 6 work or promotes water pump 6 rotating speeds, to accelerate the first circuit cycle speed, has so just accelerated the heat transfer rate of main heat exchanger 5, descends so that second loop water temperature is descended or quicken; Otherwise; When second loop water temperature was lower than 20 degrees centigrade, controller 7 reduced water pump 6 rotating speeds or 6 work that directly switch off the pump, to reduce by the first circuit cycle speed; So just reduce the heat transfer rate of main heat exchanger 5, helped first loop water temperature under intercooler 1 air flue high temperature, to heat up.Above-mentioned two control procedure complementary operations, up to first loop water temperature, just intercooler 1 water temperature is adjusted to 20-25 degree centigrade optimum working temperature.
Also comprise the automatically controlled three-way valve 9 that is electrically connected with controller 7 output terminals, first port of automatically controlled three-way valve 9 and second port are serially connected in first loop between water pump 6 and the auxiliary heat exchanger 11, and the 3rd port of automatically controlled three-way valve 9 is communicated with water tank 2 through by-pass pipe 10.Through automatically controlled three-way valve 9; Controller 7 can be adjusted the first loop low temperature water after the tertiary circuit cooling; Ratio with mixing through the laggard middle warm water of going into water tank 2 of main heat exchanger 5 heat exchange can obtain the adjustable heat exchange water of temperature, and the first loop water temperature controllability with main heat exchanger 5 heat exchange is strengthened greatly; Improve the heat exchange precision of main heat exchanger 5 greatly, also just realized the accurate control of second loop and engine charge.
In the present embodiment, controller 7 adopts the custom circuit design or adopts the PLC of market sale, and its structure and working principle belong to known technology, no longer carefully state at this.
Claims (5)
1. engine charge temperature control system; Comprise intercooler (1) and water tank (2); It is characterized in that: also comprise the main heat exchanger (5) that is provided with first passage and second channel; The water channel of the second channel of main heat exchanger (5) and intercooler (1) constitutes second loop, and temperature transducer (8) is installed in second loop, and the output terminal of temperature transducer (8) is electrically connected with controller (7); Also comprise the water pump (6) that is electrically connected with controller (7) output terminal, the first passage of water pump (6), main heat exchanger (5) and water tank (2) constitute first loop.
2. engine charge temperature control as claimed in claim 1 system; It is characterized in that: also comprise auxiliary heat exchanger (11); The first passage of auxiliary heat exchanger (11) constitutes tertiary circuit through cold water pipe (13) and freezing water source (12), and the second channel of auxiliary heat exchanger (11) is serially connected on first loop of water tank (2) waterexit end.
3. according to claim 1 or claim 2 engine charge temperature control system; It is characterized in that: also comprise the automatically controlled three-way valve (9) that is electrically connected with controller (7) output terminal; First port of automatically controlled three-way valve (9) and second port are serially connected in first loop of water pump (6) feed-water end, and the 3rd port of automatically controlled three-way valve (9) is communicated with water tank (2) through by-pass pipe (10).
4. engine charge temperature control as claimed in claim 3 system; It is characterized in that: the level meter (14) that is electrically connected with controller (7) is installed in the water tank (2); Water tank (2) is provided with the water pipe (15) that is connected with the water source, and the water supply valve (16) by controller (7) control is installed on the water pipe (15).
5. engine charge temperature control as claimed in claim 4 system; It is characterized in that: the cold valves (3) that is electrically connected with controller (7) is installed on the cold water pipe (13), and the first passage waterexit end of auxiliary heat exchanger (11) is equipped with the thermometer (4) that is electrically connected with controller (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100324586A CN102562259A (en) | 2012-02-14 | 2012-02-14 | Air inlet temperature control system of engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100324586A CN102562259A (en) | 2012-02-14 | 2012-02-14 | Air inlet temperature control system of engine |
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| CN102562259A true CN102562259A (en) | 2012-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012100324586A Pending CN102562259A (en) | 2012-02-14 | 2012-02-14 | Air inlet temperature control system of engine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137907A (en) * | 2015-08-17 | 2015-12-09 | 华晨汽车集团控股有限公司 | Thermostatic water control method for engine testing platform and thermostatic water control device |
| CN114109585A (en) * | 2021-11-25 | 2022-03-01 | 李斯特测试设备(上海)有限公司 | Inter-cooling system and test equipment |
| CN114198193A (en) * | 2020-09-02 | 2022-03-18 | 上海汽车集团股份有限公司 | Data processing method and device for temperature of cooling liquid of water-air cooling system |
| CN115126594A (en) * | 2022-07-29 | 2022-09-30 | 重庆长安汽车股份有限公司 | Rack two-stage heat transfer circulation temperature control system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3872835A (en) * | 1972-09-15 | 1975-03-25 | Herbert Deutschmann | Cooling water circulation for a supercharged internal combustion piston engine |
| WO1980000863A1 (en) * | 1978-10-23 | 1980-05-01 | Nohab Diesel Ab | Fresh water cooling system for compressed charged i.c.engines |
| JPS6165016A (en) * | 1984-09-05 | 1986-04-03 | Mazda Motor Corp | Intake device of engine with supercharger |
| US4598687A (en) * | 1983-10-26 | 1986-07-08 | Nissan Motor Co., Ltd. | Intercooler for supercharged internal combustion engine |
| CN201133280Y (en) * | 2007-12-14 | 2008-10-15 | 奇瑞汽车股份有限公司 | Engine central cooling system |
-
2012
- 2012-02-14 CN CN2012100324586A patent/CN102562259A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3872835A (en) * | 1972-09-15 | 1975-03-25 | Herbert Deutschmann | Cooling water circulation for a supercharged internal combustion piston engine |
| WO1980000863A1 (en) * | 1978-10-23 | 1980-05-01 | Nohab Diesel Ab | Fresh water cooling system for compressed charged i.c.engines |
| US4598687A (en) * | 1983-10-26 | 1986-07-08 | Nissan Motor Co., Ltd. | Intercooler for supercharged internal combustion engine |
| JPS6165016A (en) * | 1984-09-05 | 1986-04-03 | Mazda Motor Corp | Intake device of engine with supercharger |
| CN201133280Y (en) * | 2007-12-14 | 2008-10-15 | 奇瑞汽车股份有限公司 | Engine central cooling system |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137907A (en) * | 2015-08-17 | 2015-12-09 | 华晨汽车集团控股有限公司 | Thermostatic water control method for engine testing platform and thermostatic water control device |
| CN114198193A (en) * | 2020-09-02 | 2022-03-18 | 上海汽车集团股份有限公司 | Data processing method and device for temperature of cooling liquid of water-air cooling system |
| CN114198193B (en) * | 2020-09-02 | 2023-02-03 | 上海汽车集团股份有限公司 | Data processing method and device for temperature of cooling liquid of water-air cooling system |
| CN114109585A (en) * | 2021-11-25 | 2022-03-01 | 李斯特测试设备(上海)有限公司 | Inter-cooling system and test equipment |
| CN115126594A (en) * | 2022-07-29 | 2022-09-30 | 重庆长安汽车股份有限公司 | Rack two-stage heat transfer circulation temperature control system |
| CN115126594B (en) * | 2022-07-29 | 2024-02-20 | 重庆长安汽车股份有限公司 | Bench two-stage heat exchange circulation temperature control system |
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Application publication date: 20120711 |